Used and old car parts are still important. You can find them at different places like car parts stores, car shops, junkyards and even in the internet. As of now, internet is on the run in buying and selling stuffs like that. You can even sell your old and used car parts over the internet. Some of forum websites and blogs are having this kind of activity. You meet people who are looking to those parts and dealing with them, buying or selling parts in return.